Sheet-metal nail



E. E. HARDY.

SHEET METAL NAIL.

APPLICATION FILED JULY 19,1920.

EAM-JWQ, Patented Jan. 31, 1922.

EMERY EASTMAN HARDY, OFiBROOKLYN, NEW YORK.

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Specification of Letters Patent.

llatentcd Jan. 31, 1922.

Application filed July 19, 1920. Serial No. 397,158.

To all whom it may concern:

Be it known that I, EMERY EAs'rMAN HARDY, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Sheet- Metal Nails, of which the following is a specification.

My invention relates to improvements in sheet-metal nails, of the form in which a nail is made from stock in the form of sheetnietal of suitable thickness to form the body of the nail without manipulation or other operation than such as is involved in cutting the blank from the sheet material, so that the finishing operation is confined to formin the head structure on one end of the said blank, and the object of my improvement is to product a nail in which the said head structure is made by distortion or bending of the material at the head end so that the head will overhang the body structure, and, furthermore, to obtain a balanced head structure relatively to the body portion by deflecting the material that is utilized in forming the head in two directions, part, preferably approximately one-half of the material available, being deflected toward one side and another part, or half, being deflected towards the opposite side, relatively to the body structure or axis of the nail structure.

In the accompanying drawing Figure 1 is a side elevation of my improved sheet-metal nail.

Figure 2 is an edge view of the same.

Figure 3 is a plan view of the same.

Figure 4c is a plan View of the blank that is used for formin the nail shown.

Figure 5 is a si e elevation of a modified form of my improved sheet-metal nail.

Figure 6 is an edge view of the same.

Figure 7 is a plan view of the same.

Figure 8 is a plan view of the blank for the nail shown in Figs. 5, 6, and 7 Figure 9 is a perspectlve view, on an enlarged scale, of the upper or head portion of the nail shown in Figs. 1 to 3 inclusive.

Figure 10 is a similar view of the nail shown in Figs. 5, 6, and 7 My improved sheet-metal nail 10 is formed from sheet-metal by shearing or cutting in any desired manner to provide the blank as shown in Fig. 4.

The said blank is wedge shaped throughout the entire length, the tip end portion 11 being of suitable fineness to be adapted for 4 driving into wood, and the side edges 12 being appreciably divergent so that the blank is of appreciable width at the wide end 13, and therefore at the said wide end or head end 13 there is material available for forming the head structure 14 therefrom by deflecting or distorting the said material.

Head structures may be made in various ways, by deflecting material so as to overhang the body structure 15.

I prefer, however, to provide a head structure that will be in balanced relation to the said body structure 15 by operating on the blank in some manner so that in the finished nail there will be material that overhangs the body structure on two opposed sides thereof, such as the two overhan ing head elements 16 shown in Fig. 2. Thus, as shown, one of the said head elements 16 overhangs the body structure 15 on one side, being generally or approximately of the width of one-half of the blank, and the other headelement 16 overhangs the opposite side.

It will be noted that the head elements 16 are of appreciable length. In order to obtain this result in operating on the blank I provide a split 17 in the head end portion 13 of proper depth to provide material for the head elements 16 of such lengths as may be desired.

It will be further noted that the head elements 16 are of curved or hook form, the material being appreciably curled in being deflected from the flat position in the blank, and that the extreme or itp end 18 may be in the form of a relatively sharp prong, as shown.

This structure of the nail elements 18, being double, one on each side of the blank body 15, serves to prevent splitting of the boards into which the nails may be driven,

the curved nail elements having a binding efi'ect.

The nail structure 1O shown in Fig. 5

has a head structure 1 1 that is formed without a positive shearing or severing of the material of the head end portion 13 of the blank, the deflection of the material being appreciablyless, the head being accordingly smaller, so that this particular form of nail would serve as a finishing nail.

Thus the head elements 16 are formed by simply forcing the material over to one side in each case, one part in one direction and the other part in the opposite d rection,

so as to overhang the body 15, and in lieu of the cut or positive division 17 between the nail head elements 16 there is a' connecting web 17 intermediate the two nail head elements 16*.

The taper form for the blank permits of economy in material, and in use. The taper form for the side edges of the nail provides adrawing effect that is effective for holding the parts together when the nail is entered through one board into another or into studding and the like. I

By making the nails shown and described of relatively heavy or thick material the body structure of the nail is rigid and strong;

so as to be adapted to resist the blows of a hammer without bending 0r buckling under conditions of use.

I claim as my invention 1., A nail made of sheet-metal, having a body structure of substantially wedgeshaped form and a head structure at the wide end of the said body structure, the said head structure being composed of a plurality of head elements that are each individually integral with a part of the said wide end and that overhang the body structure, and the said head elements beingdisposed so that one thereof overhangs the body structure on the side of one face and a second head element overhangs the body structure on the side of the opposite face.

2. A nail made of sheet-metal having a body portion for being driven into material to be operated upon and havin a head structure on one end of the said %)ody portion, the said body portion comprising a single layer or thickness of the metal, of: generally wedge-shape, and having a relatively appreciable thickness so as to be adapted to withstand and sustain the driving force in use, the head structure being composed of material in extension of the wide end of the said body portion, the said extended. material being divided into a plurality of head elements, and one of the said head elements bein bent in one direction relatively to the sa1d body 'portion and another of the said head elements being bent in the opposite direction, whereby parts of the said head structure will overhang the opposite faces of the body portion.

EMERY EASTMAN HARDY. 

